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Journal of Beijing Institute of Technology 2012年第2期21卷 203-209页

作者：李志刚张金换马春生 State Key Laboratory of Automotive Safety and Energy Tsinghua University

Studies were conducted to evaluate driver injury metrics with varying crash pulse in offset crash. First, a vehicle finite element （ FE ） model and an occupant restraint system （ORS） model were developed and validated against tests; then, the crash pulse collected from the test vehicle was equivalent to a dual-trapezoid shape pulse which will be quantitatively described by six parameters and was put into the ORS model; finally, parametric studies were conducted to analyze the sensitivi- ties of parameters of equivalent crash pulse on head resultant acceleration, head injury criteria （HIC）, neck axial force and chest deformation. Results showed that the second peak value of the crash pulse was statistically significant on all these injury criteria （P = 0. 001, 0. 000, 0. 000, 0. 000 re- spectively）, the first peak level had a negative significantly effect on all the criteria aforementioned except the chest deformation （P = 0. 011, 0. 038, and 0. 033 respectively）, and the interaction of the time-points of first and second peak values had a significant influence on head resultant acceleration （P = 0. 03 ）. A higher first peak value and a lower second peak value of the crash pulse could bring deeply lower injury metrics.

关键词： offset crash dummy parametric study injury metrics sensitivity

Variable-top stem biomass equations at tree-level generated by a simultaneous density-integral system for second growth forests of roble, raulí,and coigüe in Chile

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Journal of Forestry Research 2019年第3期30卷 993-1010页

作者： Carlos Valenzuela Eduardo Acuna Alicia Ortega Geronimo Quinonez-Barraza Jose Corral-Rivas Jorge Cancino Departamento Manejo de Bosques y Medio Ambiente Facultad de Ciencias ForestalesUniversidad de Concepcion Victoria 631Barrio Universitario4070386 ConcepcionChile Instituto de Bosques y Sociedad Facultad de Ciencias Forestales y Recursos NaturalesUniversidad Austral de ChileCampus Isla Teja5110566 ValdiviaChile Campo Experimental Valle del Guadiana Instituto Nacional de Investigaciones Forestales Agricolas y Pecuarias (INIFAP)km 4.5 Carretera Durango-Mezquital34170 DurangoDGOMexico Instituto de Silvicultura e Industria de la Madera Universidad de Juarez del Estado de Durango34120 DurangoMexico

Variable-top stem biomass models at the tree level for second growth forests of roble (Nothofagus obliqua), rauli(Nothofagus alpina), and coigüe (Nothofagus dombeyi) were fitted by a simultaneous density-integral system, which combines a stem taper model and a wood basic density model. For each model, an autoregressive structure of order 2 and a power equation of residual variance were incorporated to reduce residual autocorrelation and heteroscedasticity, respectively. By using dummy variables in the regression analysis, zonal effects on the parameters in the variable-top stem biomass equations were detected in roble. Consequently, equations for clusters of zones were obtained. These equations presented significant parameters and a high precision in both fitting and validation processes (i.e., CV<11.5% and CVp<11.9%, respectively), demonstrating that they are unbiased. The advantage of these types of functions is that they provide estimates of volume and biomass of sections of the stem, defined between any two points of the stem in the three species. Thus, depending on the final use of the wood and the dimensions of the tree, a stem fraction can be quantified in units of volume and the remaining fraction in units of weight.

关键词： Autocorrelation Density-integral dummy variables Autoregressive error structure Heteroscedasticity

CIRD-F:Spread and Influence of COVID-19 in China

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Journal of Shanghai Jiaotong university(Science) 2020年第2期25卷 147-156页

作者：周凌云吴凯伟刘涵之高远宁高晓沨 Antai College of Economics and Management Shanghai Jiao Tong UniversityShanghai 200240China SJTU-ParisTech Elite Institute of Technology Shanghai Jiao Tong UniversityShanghai 200240China School of Electronic Information and Electrical Engineering Shanghai Jiao Tong UniversityShanghai 200240China

The outbreak of coronavirus disease 2019(COVID-19)has been spreading rapidly in China and the Chinese government took a series of policies to control the ***,it will be helpful to predict the tendency of the epidemic and analyze the influence of official *** models for prediction,such as cabin models and individual-based models,are either oversimplified or too meticulous,and the influence of the epidemic was studied much more than that of official *** predict the epidemic tendency,we consider four groups of people,and establish a propagation dynamics *** also create a negative feedback to quantify the public vigilance to the *** evaluate the tendency of epidemic in Hubei and China except Hubei separately to predict the situation of the whole *** show that the epidemic will terminate around 17 March 2020 and the final number of cumulative infections will be about 78191(prediction interval,74872 to 82474).By changing the parameters of the model accordingly,we demonstrate the control effect of the policies of the government on the epidemic situation,which can reduce about 68%possible *** the same time,we use the capital asset pricing model with dummy variable to evaluate the effects of the epidemic and official policies on the revenue of multiple industries.

关键词： coronavirus disease 2019(COVID-19) epidemic prediction model negative feedback capital asset pricing model dummy variable

基于180nm工艺的SoC芯片设计DRC验证分析

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电子技术（上海） 2023年第6期52卷 1-3页

作者：王鹏上海爱思尔教育科技有限公司上海200131

阐述一款SoC芯片在180nm工艺中的DRC验证流程和方法,探讨使用后端设计工具Innovus导出GDSII数据时MapFile文件的设置、dummyMetal的添加、GDSII数据的合并,最终通过Calibredrv打开GDSII数据,查看DRC结果,提出修复DRC错误的方法。

关键词：集成电路设计 DRC验证 GDSII dummy

Thermal Hydraulic Analysis Improvement for the IEA-R1 Research Reactor and Fuel Assembly Design Modification

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World Journal of Nuclear Science and Technology 2018年第2期8卷 54-69页

作者： Pedro Ernesto Umbehaun Walmir Maximo Torres José Antonio Batista Souza Mitsuo Yamaguchi Antonio Teixeira e Silva Roberto Navarro de Mesquita Nikolas Lymberis Scuro Delvonei Alves de Andrade Nuclear and Energy Research Institute (Instituto de Pesquisas Energéticas e Nucleares) S&auml o Paulo Brazil

This paper presents the sequence of activities to improve the thermal hydraulic analysis of the IEA-R1 research reactor to operate in safe conditions after power upgrade from 2 to 5 MW and core size reduction from 30 to 24 fuel assemblies. A realistic analysis needs the knowledge of the actual operation conditions (heat flow, flow rates) beyond the geometric data and the uncertainties associated with manufacturing and measures. A dummy fuel assembly was designed and constructed to measure the actual flow rate through the core fuel assemblies and its pressure drop. First results showed that the flow distribution over the core is nearly uniform. Nevertheless, the values are below than the calculated ones and the core bypass flow rate is greater than those estimated previously. Based on this, several activities were performed to identify and reduce the bypass flow, such as reduction of the flow rate through the sample irradiators, closing some unnecessary secondary holes on the matrix plate, improvement in the primary flow rate system and better fit of the core components on the matrix plate. A sub-aquatic visual system was used as an important tool to detect some bypass flow path. After these modifications, the fuel assemblies flow rate increased about 13%. Additional tests using the dummy fuel assembly were carried out to measure the internal flow distribution among the rectangular channels. The results showed that the flow rate through the outer channels is 10% - 15% lower than the internal ones. The flow rate in the channel formed between two adjacent fuel assemblies is an estimated parameter and it is difficult to measure because this is an open channel. A new thermal hydraulic analysis of the outermost plates of the fuel assemblies takes into account all this information. Then, a fuel design modification was proposed with the reduction of 50% in the uranium quantity in the outermost fuel plates. In order to avoid the oxidation of the outermost plates by high temp

关键词： Nuclear Research Reactor Uranium Reduction Thermal Hydraulic Analysis Flow Measurement dummy Fuel Assembly

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用Jaleo制作电影胶片效果

电视字幕．特技与动画 2003年第4期10卷 20-21页

作者：王强中央电视台采录部

Jaleo是运行在SGI平台上的后期制作软件,它具有强大的编辑合成功能。下面,我们就利用软件所提供的工具来制作一个飘动变形的电影胶片。

关键词：电影胶片 Translation 视频素材树结构水平移动虚拟 dummy 布尔减黑白胶片 External

TFT-LCD工艺中Gap性不良的分析与改善

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电子世界 2017年第19期 64-66页

作者：张明亮黎海波丁甲刘俊豪周保全合肥京东方光电科技有限公司

Cell Gap是Cell工艺中最重要的控制参数之一,它对LCD的显示效果有着至关重要的影响。本文分析了影响Cell Gap的因素,对Gap性不良的分析流程进行阐述,并对各种不同原因产生的Gap性不良进行分析研究,为实际的生产改善此类不良提供了指导... 详细信息

Cell Gap是Cell工艺中最重要的控制参数之一,它对LCD的显示效果有着至关重要的影响。本文分析了影响Cell Gap的因素,对Gap性不良的分析流程进行阐述,并对各种不同原因产生的Gap性不良进行分析研究,为实际的生产改善此类不良提供了指导作用。

关键词： TFT—LCD Cell Gap dummy Seal PS Height

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MRI特殊故障检修

实用医学影像杂志 1997年第1期 43-43页

作者：王世杰王向东山西省人民医院MR室太原市030012

在使用西门子公司MAGNETOM IMPACT1.0T磁共振成像系统时,我们遇到一例特殊图像故障:在图像中有许多条分布基本均匀的横线,这一故障可能是由于不同的外界干扰频率所致。一般外界干扰信号通过接收天线或射频屏蔽受损的电缆引入。为了隔离... 详细信息

在使用西门子公司MAGNETOM IMPACT1.0T磁共振成像系统时,我们遇到一例特殊图像故障:在图像中有许多条分布基本均匀的横线,这一故障可能是由于不同的外界干扰频率所致。一般外界干扰信号通过接收天线或射频屏蔽受损的电缆引入。为了隔离故障源,我们采用最小结构,接通部分接收及发射通道进行干扰检测。首先,切断RFPA的射频输入,将RFPA的输出接dummy启动测试,图像中横线仍然存在,再关掉梯度系统电源,故障没有什么改变。这时,我们认为射频发射通道及梯度系统是正常的。

关键词：特殊故障图像故障射频屏蔽梯度系统最小结构接收衰减外界干扰行干扰磁共振成像系统 dummy

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寻找梦幻鸟

青年博览 2010年第18期 I0001-I0001页

旅居伦敦的德国摄影师Jan von Hollehen是dummy,SZ Magazine、Diva、Neont等杂志的签约摄影师，他的作品《dieams of flying》为他带来不少名气，

关键词：摄影师德国 dummy “寻找梦幻鸟” 摄影作品